foiegras r70 - in trunk: . src/foiegras/buffer

[denisw svn gnome org]

Author: denisw
Date: Sun Mar 16 15:24:30 2008
New Revision: 70
URL: http://svn.gnome.org/viewvc/foiegras?rev=70&view=rev

Log:
2008-03-16  Denis Washington  <denisw svn gnome org>

	* src/foiegras/buffer/save.py:
	Missing file, added.


Added:
   trunk/src/foiegras/buffer/save.py
Modified:
   trunk/ChangeLog

Added: trunk/src/foiegras/buffer/save.py
==============================================================================
--- (empty file)
+++ trunk/src/foiegras/buffer/save.py	Sun Mar 16 15:24:30 2008
@@ -0,0 +1,109 @@
+# Copyright (C) 2008 by Denis Washington <denisw svn gnome org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+from xml.dom.minidom import getDOMImplementation
+from StringIO import StringIO
+
+from tags import BLOCK_TAGS, SIMPLE_BLOCK_TAGS, INLINE_TAGS, get_text_tag
+
+def save_document(doc_buffer):
+    """
+    Saves the passed document buffer.
+    """
+    impl = getDOMImplementation()
+
+    doc = impl.createDocument(None, "topic", None)
+
+    textiter = doc_buffer.get_start_iter()
+
+    while not textiter.is_end():
+        for tag_name in BLOCK_TAGS:
+            if textiter.has_tag(get_text_tag(tag_name)):
+                doc.documentElement.appendChild(handle_simple_block_tag(tag_name, textiter, doc))
+                break
+
+    f = file(doc_buffer.get_filename(), "w+")
+    doc.writexml(f)
+    f.close()
+
+
+def handle_simple_block_tag(tag_name, textiter, doc):
+    """
+    Handles a simple block tag.
+    """
+    e = doc.createElement(tag_name)
+    text_io = StringIO()
+
+    while not (textiter.ends_line() or textiter.is_end()):
+        inline_tag_found = False
+
+        for itag in INLINE_TAGS:
+            if textiter.has_tag(get_text_tag(itag)):
+                text_io = _add_buffered_text_to_element(text_io, e, doc)
+                e.appendChild(handle_inline_tag(itag, textiter, doc))
+                inline_tag_found = True
+                break
+
+        if not inline_tag_found:
+            text_io.write(textiter.get_char())
+            textiter.forward_char()
+
+    _add_buffered_text_to_element(text_io, e, doc)
+    textiter.forward_char()
+    return e
+
+
+def handle_inline_tag(tag_name, textiter, doc):
+    e = doc.createElement(tag_name)
+    text_io = StringIO()
+
+    while textiter.has_tag(get_text_tag(tag_name)) and not textiter.is_end():
+        inline_tag_begins = False
+
+        for itag in INLINE_TAGS:
+            if itag != tag_name:
+                if textiter.begins_tag(get_text_tag(itag)):
+                    text_io = _add_buffered_text_to_element(text_io, e, doc)
+                    e.appendChild(handle_inline_tag(itag, textiter, doc))
+                    inline_tag_begins = True
+                    break
+                elif textiter.ends_tag(get_text_tag(itag)):
+                    _add_buffered_text_to_element(text_io, e, doc)
+                    if e.hasChildNodes():
+                        return e
+
+        if not inline_tag_begins:
+            text_io.write(textiter.get_char())
+            textiter.forward_char()
+
+    _add_buffered_text_to_element(text_io, e, doc)
+    return e
+
+
+def _add_buffered_text_to_element(text_io, e, doc):
+    """
+    Appends the text in the passed StringIO to the specified element as
+    text node, and returns a fresh text node.
+    """
+    text = text_io.getvalue()
+
+    if len(text) > 0:
+        text_io.close()
+        text_io = StringIO()
+        e.appendChild(doc.createTextNode(text))
+
+    return text_io
+